Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 727 · 40 questions

What you do (Bend and split): 1. Fill a clear glass with water and set it on a steady, sunny windowsill. 2. Put white paper on the floor where the sunlight passes through the glass. 3. Move the paper or glass slowly until a rainbow appears. 4. Never look straight at the Sun.

1. 1.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) the same window (b) the same glass (c) the time of day (d) the amount of water
2. 2.🌈 In VIBGYOR, what number colour is violet?
3. 3.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the water is coloured (c) the glass is painted (d) water splits the light
4. 4.True or false: yeast is not needed for the water rainbow. (a) True (b) False
5. 5.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) yeast (c) turmeric powder (d) a sheet of white paper
6. 6.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
7. 7.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) brightness of rainbow (b) the time of day (c) the amount of water
8. 8.☀️ What is white sunlight really made of? (a) only yellow light (b) tiny drops of water (c) tiny bits of dust (d) many colours mixed
9. 9.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it gets hot (c) so it turns blue (d) so the Sun moves
10. 10.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
11. 11.🌈 How many colours do we name in a rainbow (VIBGYOR)?
12. 12.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) turmeric powder (d) a clear glass of water
13. 13.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a magnet (c) a sunny window (d) a sheet of white paper
14. 14.True or false: bright sunlight is not needed for the water rainbow. (a) False (b) True
15. 15.🌈 In VIBGYOR, what number colour is red?
16. 16.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
17. 17.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) a shadow of ice (c) a small rainbow (d) snow falling
18. 18.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) blue (c) violet (d) red
19. 19.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
20. 20.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the time of day”? (a) we change it (b) we measure it (c) we keep it the same
21. 21.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a battery cell (b) a sheet of white paper (c) a clear glass of water (d) bright sunlight
22. 22.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
23. 23.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
24. 24.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the same window (b) the amount of water (c) the same glass (d) brightness of rainbow
25. 25.🧺 Which of these is not needed for the water rainbow? (a) turmeric powder (b) bright sunlight (c) a sheet of white paper (d) a clear glass of water
26. 26.🧺 Which of these is needed for the water rainbow? (a) yeast (b) turmeric powder (c) a battery cell (d) a clear glass of water
27. 27.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
28. 28.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it turns all red (c) it floats away (d) the rainbow fades
29. 29.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a mirror (c) a sheet of white paper (d) a sunny window
30. 30.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we keep it the same (b) we measure it (c) we change it
31. 31.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “brightness of rainbow”? (a) we change it (b) we measure it (c) we keep it the same
32. 32.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) a clear glass of water (c) bright sunlight (d) a sunny window
33. 33.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) yellow (c) violet (d) orange
34. 34.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same white paper”? (a) we measure it (b) we keep it the same (c) we change it
35. 35.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is the one thing we change. (a) False (b) True
36. 36.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
37. 37.🌈 In VIBGYOR, what number colour is orange?
38. 38.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) a clear glass of water (d) yeast
39. 39.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is what we measure. (a) True (b) False
40. 40.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True

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